J1406+0102: Dust Obscured Galaxy Hiding Super Eddington Accretion System with Bright Radio Emission
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913829863030784 |
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| author | Fukuchi, Hikaru Ichikawa, Kohei Akiyama, Masayuki Kimura, Shigeo S. Toba, Yoshiki Inayoshi, Kohei Noboriguchi, Akatoki Kawaguchi, Toshihiro Chen, Xiaoyang Fitriana, Itsna K. |
| author_facet | Fukuchi, Hikaru Ichikawa, Kohei Akiyama, Masayuki Kimura, Shigeo S. Toba, Yoshiki Inayoshi, Kohei Noboriguchi, Akatoki Kawaguchi, Toshihiro Chen, Xiaoyang Fitriana, Itsna K. |
| contents | Recent high-$z$ quasar observations strongly indicate that super-Eddington accretion is a crucial phase to describe the presence of supermassive black holes (SMBHs) with $M_\mathrm{BH} \gtrsim 10^9 M_\odot$ at $z \gtrsim 7$. Motivated by theoretical predictions that the super-Eddington phase efficiently produces outflows and jets bright in radio bands, we identify a super-Eddington radio-loud dust-obscured galaxy (DOG) J1406+0102 at $z=0.2367$. This source is discovered by cross-matching the infrared-bright DOGs of Nobriguchi et al. (2019) with the VLA/FIRST 1.4 GHz radio survey data and the SDSS optical spectral catalog. J1406+0102 shows broad components in the Balmer lines, and by assuming that those lines are from the broad line region, they give BH mass estimations of $\log (M_\mathrm{BH}/M_\odot)=7.30 \pm 0.25$. Combined with an AGN luminosity of $\log (L_\mathrm{bol,[OIII]}/\mathrm{erg}~\mathrm{s}^{-1}) = 45.91\pm0.38$ estimated from the intrinsic [OIII] luminosity, this implies a super-Eddington accretion rate of $λ_\mathrm{Edd} \simeq 3$. We show that 1) J1406+0102 shows strong AGN feedback, with the [OIII] outflow velocity exceeds the escape velocity of the host galaxy halo and a kinetic efficiency of $\approx$ 8%, sufficient to quench the host galaxy; 2) its expected growth trajectory places it on an over-massive BH track; and 3) if representative of radio-loud DOGs, such sources can contribute significantly to the high-energy ($\gtrsim$ 100 TeV) cosmic neutrino background. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2303_05605 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | J1406+0102: Dust Obscured Galaxy Hiding Super Eddington Accretion System with Bright Radio Emission Fukuchi, Hikaru Ichikawa, Kohei Akiyama, Masayuki Kimura, Shigeo S. Toba, Yoshiki Inayoshi, Kohei Noboriguchi, Akatoki Kawaguchi, Toshihiro Chen, Xiaoyang Fitriana, Itsna K. Astrophysics of Galaxies High Energy Astrophysical Phenomena Recent high-$z$ quasar observations strongly indicate that super-Eddington accretion is a crucial phase to describe the presence of supermassive black holes (SMBHs) with $M_\mathrm{BH} \gtrsim 10^9 M_\odot$ at $z \gtrsim 7$. Motivated by theoretical predictions that the super-Eddington phase efficiently produces outflows and jets bright in radio bands, we identify a super-Eddington radio-loud dust-obscured galaxy (DOG) J1406+0102 at $z=0.2367$. This source is discovered by cross-matching the infrared-bright DOGs of Nobriguchi et al. (2019) with the VLA/FIRST 1.4 GHz radio survey data and the SDSS optical spectral catalog. J1406+0102 shows broad components in the Balmer lines, and by assuming that those lines are from the broad line region, they give BH mass estimations of $\log (M_\mathrm{BH}/M_\odot)=7.30 \pm 0.25$. Combined with an AGN luminosity of $\log (L_\mathrm{bol,[OIII]}/\mathrm{erg}~\mathrm{s}^{-1}) = 45.91\pm0.38$ estimated from the intrinsic [OIII] luminosity, this implies a super-Eddington accretion rate of $λ_\mathrm{Edd} \simeq 3$. We show that 1) J1406+0102 shows strong AGN feedback, with the [OIII] outflow velocity exceeds the escape velocity of the host galaxy halo and a kinetic efficiency of $\approx$ 8%, sufficient to quench the host galaxy; 2) its expected growth trajectory places it on an over-massive BH track; and 3) if representative of radio-loud DOGs, such sources can contribute significantly to the high-energy ($\gtrsim$ 100 TeV) cosmic neutrino background. |
| title | J1406+0102: Dust Obscured Galaxy Hiding Super Eddington Accretion System with Bright Radio Emission |
| topic | Astrophysics of Galaxies High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2303.05605 |